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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/v8.h" | 5 #include "src/v8.h" |
6 | 6 |
7 #if V8_TARGET_ARCH_X64 | 7 #if V8_TARGET_ARCH_X64 |
8 | 8 |
9 #include "src/base/bits.h" | 9 #include "src/base/bits.h" |
10 #include "src/base/division-by-constant.h" | 10 #include "src/base/division-by-constant.h" |
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4563 void MacroAssembler::InitializeFieldsWithFiller(Register start_offset, | 4563 void MacroAssembler::InitializeFieldsWithFiller(Register start_offset, |
4564 Register end_offset, | 4564 Register end_offset, |
4565 Register filler) { | 4565 Register filler) { |
4566 Label loop, entry; | 4566 Label loop, entry; |
4567 jmp(&entry); | 4567 jmp(&entry); |
4568 bind(&loop); | 4568 bind(&loop); |
4569 movp(Operand(start_offset, 0), filler); | 4569 movp(Operand(start_offset, 0), filler); |
4570 addp(start_offset, Immediate(kPointerSize)); | 4570 addp(start_offset, Immediate(kPointerSize)); |
4571 bind(&entry); | 4571 bind(&entry); |
4572 cmpp(start_offset, end_offset); | 4572 cmpp(start_offset, end_offset); |
4573 j(less, &loop); | 4573 j(below, &loop); |
4574 } | 4574 } |
4575 | 4575 |
4576 | 4576 |
4577 void MacroAssembler::LoadContext(Register dst, int context_chain_length) { | 4577 void MacroAssembler::LoadContext(Register dst, int context_chain_length) { |
4578 if (context_chain_length > 0) { | 4578 if (context_chain_length > 0) { |
4579 // Move up the chain of contexts to the context containing the slot. | 4579 // Move up the chain of contexts to the context containing the slot. |
4580 movp(dst, Operand(rsi, Context::SlotOffset(Context::PREVIOUS_INDEX))); | 4580 movp(dst, Operand(rsi, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
4581 for (int i = 1; i < context_chain_length; i++) { | 4581 for (int i = 1; i < context_chain_length; i++) { |
4582 movp(dst, Operand(dst, Context::SlotOffset(Context::PREVIOUS_INDEX))); | 4582 movp(dst, Operand(dst, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
4583 } | 4583 } |
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5094 movl(rax, dividend); | 5094 movl(rax, dividend); |
5095 shrl(rax, Immediate(31)); | 5095 shrl(rax, Immediate(31)); |
5096 addl(rdx, rax); | 5096 addl(rdx, rax); |
5097 } | 5097 } |
5098 | 5098 |
5099 | 5099 |
5100 } // namespace internal | 5100 } // namespace internal |
5101 } // namespace v8 | 5101 } // namespace v8 |
5102 | 5102 |
5103 #endif // V8_TARGET_ARCH_X64 | 5103 #endif // V8_TARGET_ARCH_X64 |
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